USB battery charger



FIG. 1 is a left perspective view of a USB battery charger showing mynew design;

FIG. 2 is a right perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a perspective view of the design, showing the use thereof.

The broken line showing is included for the purpose of illustratingenvironment features and forms no part of the claimed design.

The ornamental design for a USB battery charger, as shown and described.